"He who walks straight rarely falls...." - Quote by Leonardo Da Vinci

“Here is a thing which the more it is needed the more it is rejected: and this is advice, which is unwillingly heeded by those who most need it, that is to say, by the ignorant.”

“No human investigation can claim to be scientific if it doesn't pass the test of mathematical proof.”

“The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known.”

“The best lightning rod for your protection is your own spine.”

“If you lose your wealth, you have lost nothing; if you lose your health, you have lost something; but if you lose your character, you have lost everything.”

“He who speaks without modesty will find it difficult to make his words good.”

“You can't disrespect the love. You can't disrespect the peace treaty.”

“Is not anyone with any degree of mental honesty conscious of telling lies all day long, both in talking and writing, simply because lies will fall into artistic shape when truth will not?”

“As president of the United States, I don't bluff.”