It is human beings’ sinister mind that produces viruses as biological weapons.

Focusing your life solely on making a buck shows a certain poverty of ambition. It asks too little of yourself. Because it's only when you hitch your wagon to something larger than yourself that you realize your true potential.

Computers themselves, and software yet to be developed, will revolutionize the way we learn.

Let us all be brave enough to die the death of a martyr, but let no one lust for martyrdom.

We here highly resolve that these dead shall not have died in vain - that this nation, under God, shall have a new birth of freedom - and that government of the people, by the people, for the people, shall not perish from the earth.

Where there is righteousness in the heart, there is beauty in the character. When there is beauty in the character, there is harmony in the home. When there is harmony in the home, there is order in the nation. When there is order in the nation, there is peace in the world.

It's not that I'm so smart, it's just that I stay with problems longer.

The educated differ from the uneducated as much as the living from the dead.

The more you like yourself, the less you are like anyone else, which makes you unique.

The greatest virtues are those which are most useful to other persons.

In war as in life, it is often necessary when some cherished scheme has failed, to take up the best alternative open, and if so, it is folly not to work for it with all your might.