Obama Reveals 3 Pieces of Advice He 's Shared with Daughters Malia and Sasha .
WATCH : Backstage with Michelle And Barack Obama : All the Best Photos from Their ` Afterlife ' 
During a Q&A with Bill and Melinda Gates on Wednesday for their charity foundation , former President Barack Obama revealed the three big pieces of leadership advice he 's given his teenage daughters over the years . 
"When they were small , their responsibilities were small , like , ` Say when you want to go potty ' ," Obama joked of Malia , now 19 , and Sasha , 16 . 
Obama says he and his wife , former First Lady Michelle Obama , have tried to impress upon their daughters the importance of being kind , considerate , empathetic and hardworking . 
Obama said he understands that Sasha and Malia "will choose to participate in different ways because they 've got different temperaments , different strengths ." 
"If you are a brilliant engineer , you do n't have to make a speech ," Obama said . 
"There are a lot of different ways to make a contribution and I try to emphasize that to them as well ," Obama said .
WATCH : Backstage with Michelle And Barack Obama : All the Best Photos from Their ` Afterlife ' 
During a Q&A with Bill and Melinda Gates on Wednesday for their charity foundation , [TGT] revealed the three big pieces of leadership advice [TGT] 's given [TGT] teenage daughters over the years . 
"When they were small , their responsibilities were small , like , ` Say when you want to go potty ' ,[TGT] joked of Malia , now 19 , and Sasha , 16 . 
[TGT] says [TGT] and [TGT] wife , former First Lady Michelle Obama , have tried to impress upon their daughters the importance of being kind , considerate , empathetic and hardworking . 
[TGT] said [TGT] understands that Sasha and Malia "will choose to participate in different ways because they 've got different temperaments , different strengths ." 
"If you are a brilliant engineer , you do n't have to make a speech ," [TGT] said . 
"There are a lot of different ways to make a contribution and I try to emphasize that to them as well ," [TGT] said .