Answer the question at the end by quoting:

Prince Grigory Aleksandrovich Potemkin-Tavricheski (Russian: Grigorii Aleksandrovich Potiomkin-Tavricheskii; 'Potyomkin', r Grigoriy Aleksandrovich Potyomkin-Tavricheskiy; October 11 [O.S. September 30] 1739 - October 16 [O.S. October 5] 1791) was a Russian military leader, statesman, nobleman and favourite of Catherine the Great. He died during negotiations over the Treaty of Jassy, which ended a war with the Ottoman Empire that he had overseen. Potemkin was born into a family of middle-income noble landowners.
Potemkin "exuded both menace and welcome"; he was arrogant, demanding of his courtiers and very changeable in his moods but also fascinating, warm and kind. It was generally agreed among his female companions that he was "amply endowed with 'sex appeal'". Louis Philippe, comte de Segur described him as "colossal like Russia", "an inconceivable mixture of grandeur and pettiness, laziness and activity, bravery and timidity, ambition and insouciance". The internal contrast was evident throughout his life: he frequented both church and numerous orgies, for example. In Segur's view, onlookers had a tendency to unjustly attribute to Catherine alone the successes of the period and to Potemkin the failures. An eccentric workaholic, Potemkin was vain and a great lover of jewelry (a taste he did not always remember to pay for), but he disliked sycophancy and was sensitive about his appearance, particularly his lost eye. He only agreed to having portraits made of him twice, in 1784 and again in 1791, both times by Johann Baptist von Lampi and from an angle which disguised his injury. Potemkin was also an intellectual. The Prince of Ligne noted that Potemkin had "natural abilities [and] an excellent memory". He was interested in history and generally knowledgeable. Potemkin loved the classical music of the period, as well as opera. He liked all food, both peasant and fine; particular favorites included roast beef and potatoes, and his anglophilia meant that English gardens were prepared wherever he went. A practical politician, his political ideas were "quintessentially Russian", and he believed in the superiority of the Tsarist autocracy (he once described the French revolutionaries as "a pack of madmen"). Potemkin's habits included biting his nails, to the point where he developed hangnail. One evening, at the height of his power, Potemkin declared to his dinner guests: Everything I have ever wanted, I have... I wanted high rank, I have it; I wanted medals, I have them; I loved gambling, I have lost vast sums; I liked giving parties, I've given magnificent ones; I enjoy building houses, I've raised palaces; I liked buying estates, I have many; I adore diamonds and beautiful things - no individual in Europe owns rarer or more exquisite stones. In a word, all my passions have been sated. I am entirely happy! Ultimately Potemkin proved a controversial figure. Criticisms include "laziness, corruption, debauchery, indecision, extravagance, falsification, military incompetence and disinformation on a vast scale" but supporters hold that only "the sybaritism [devotion to luxury] and extravagance... are truly justified", stressing Potemkin's "intelligence, force of personality, spectacular vision, courage, generosity and great achievements". Though not a military genius, he was "seriously able" in military matters. Potemkin's contemporary Segur was quick to criticise, writing that "nobody thought out a plan more swiftly [than Potemkin], carried it out more slowly and abandoned it more easily". Another contemporary, the Scotsman Sir John Sinclair, added that Potemkin had "great abilities" but was ultimately a "worthless and dangerous character". Russian opponents such as Semyon Vorontsov agreed: the Prince had "lots of intelligence, intrigue and credit" but lacked "knowledge, application and virtue".

What was his personality like?

Potemkin "exuded both menace and welcome"; he was arrogant,

Answer the question at the end by quoting:

Robert James Fischer (March 9, 1943 - January 17, 2008) was an American chess grandmaster and the eleventh World Chess Champion. Many consider him to be the greatest chess player of all time. Bobby Fischer showed great skill in chess from an early age; at 13, he won a brilliancy known as "The Game of the Century". At age 14, he became the US Chess Champion, and at 15, he became both the youngest grandmaster up to that time and the youngest candidate for the World Championship.
Sources implying that Paul Nemenyi, a Hungarian-Jewish mathematician and physicist and an expert in fluid and applied mechanics, was Fischer's biological father were first made public in a 2002 investigation by Peter Nicholas and Clea Benson of The Philadelphia Inquirer. Throughout the 1950s, the FBI investigated Regina and her circle for her alleged communist sympathies, as well as her previous life in Moscow. FBI files identify Paul Nemenyi as Bobby Fischer's biological father, showing that Hans-Gerhardt Fischer never entered the United States, having been refused admission by US immigration officials due to his alleged Communist sympathies. Not only were Regina and Nemenyi reported to have had an affair in 1942, but Nemenyi made monthly child support payments to Regina and paid for Bobby's schooling until his own death in 1952. Nemenyi had lodged complaints with social workers, saying he was concerned about the way that Regina was raising Bobby, to the point that, on at least one occasion, Nemenyi broke down in tears. Later on Bobby told the Hungarian chess player Zita Rajcsanyi that Paul Nemenyi would sometimes show up at the family's Brooklyn apartment and take him on outings. After Paul Nemenyi died in 1952, Regina Fischer wrote a letter to Nemenyi's first son, Peter, asking if Paul had left money for Bobby in his will: Bobby was sick 2 days with fever and sore throat and of course a doctor or medicine was out of the question. I don't think Paul would have wanted to leave Bobby this way and would ask you most urgently to let me know if Paul left anything for Bobby. On one occasion, Regina told a social worker that the last time she had ever seen Hans-Gerhardt Fischer was in 1939, four years before Bobby was born. On another occasion, she told the same social worker she had traveled to Mexico to see Hans-Gerhardt in June 1942 and that Bobby was conceived during that meeting. According to Bobby Fischer's brother-in-law, Russell Targ (who was married to Joan), Regina concealed the fact that Nemenyi was Bobby's father because she wanted to avoid the stigma of an out-of-wedlock birth.

What kind of relationship did Paul and Bobby have?
Later on Bobby told the Hungarian chess player Zita Rajcsanyi that Paul Nemenyi would sometimes show up at the family's Brooklyn apartment and take him on outings.