Sentence:  Another fascinating thing about the <WSD>transcendentals</WSD> is that each is fully contained in the others. When you appreciate beauty, for example, you recognise the presence of goodness and truth. When you grasp the truth about something you experience a moment of beauty in, perhaps, the simplicity or power of the insight. When you observe goodness in the actions of another person you are seeing truth and beauty in operation. 
Meaning of the word marked with <WSD> tags:  Any one of the three "transcendental properties of being": truth, beauty or goodness, which respectively are the ideals of science, art and religion and the principal subjects of the study of logic, aesthetics and ethics.