A leader or a man of action in a crisis almost always acts subconsciously and then thinks of the reasons for his action

Kind words will unlock an iron door.

Moral excellence comes about as a result of habit. We become just by doing just acts, temperate by doing temperate acts, brave by doing brave acts.

Mathematics is the key and door to the sciences.

There are two ways to reach me: by way of kisses or by way of the imagination. But there is a hierarchy: the kisses alone don't work.

Dream big and dare to fail.

You can't build a reputation on what you are going to do.