Behavior, as such, is not to be regarded as a mere chain of muscular contractions, but rather as a purposive and cognitive affair.

The human being is a most curious creature. He thinks he has a soul, but all he has is a body.

Le soleil, le foyer de tendresse et de vie, verse l'amour brûlant à la terre ravie.

Every scientist has a responsibility to consider the broader implications of their work.

对这个世界有所助益是获得快乐的唯一途径。