Quote by Jean d'Alembert

"Doubt is an uncomfortable condition, but certainty is a ridiculous one."

"The greatest mathematicians, like the greatest poets, are men of imagination."

"I believe in God, but I do not believe that God has any of the properties which theologians ascribe to him."

"The true method of knowledge is experiment."

"A good man treats his wife with respect."

"Kindness always comes back around."

"The power of a smile can change everything."

"Kindness is weakness to some. Not to me."