Many of life's failures are people who don't realize how close they were to success when they gave up.

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

The eyes of some persons are large, others small, and others of a moderate size; the last-mentioned are the best. And some eyes are projecting, some deep-set, and some moderate, and those which are deep-set have the most acute vision in all animals; the middle position is a sign of the best disposition.

Jesus is ideal and wonderful, but you Christians - you are not like him.

The art of a people is a true mirror to their minds.

I'm not an expert on the arms race.

Nobody can make it to the present or the future by clinging to their past.

Pointing is a metaphor we all know. We've done a lot of studies and tests on that, and it's much faster to do all kinds of functions, such as cutting and pasting, with a mouse, so it's not only easier to use but more efficient.

There are strings in the human heart that had better not be vibrated.

Whenever I go on a ride, I'm always thinking of what's wrong with the thing and how it can be improved.

Even a mistake may turn out to be the one thing necessary to a worthwhile achievement. 

I was always fascinated by engineering. Maybe it was an attempt maybe to get my father's respect or interest, or maybe it was just a genetic love of technology, but I was always trying to build things.