„Teach thy tongue to say, “I do not know,” and thous shalt progress.”

It is not the mountain we conquer but ourselves.

Pure mathematics is, in its way, the poetry of logical ideas.

In the end, we will remember not the words of our enemies, but the silence of our friends.

Try not to become a man of success but rather try to become a man of value.

All wrong-doing arises because of mind. If mind is transformed can wrong-doing remain?

If a book about failures doesn't sell, is it a success?