The past is always tense and the future, perfect.

The celestial machine is to be likened not to a divine organism but rather to a clockwork.

Those who make the worst use of their time are the first to complain of its brevity.

In time history must become a fairy tale—it will become again what it was in the beginning.

We should not say that one man’s hour is worth another man’s hour, but rather that one man during an hour is worth just as much as another man during an hour. Time is everything, man is nothing; he is, at most, time’s carcass.

I look for the end of the future, but it never ceases to arrive. 

Time is a veil interposed between God and ourselves, as our eyelid is between our eye and the light.

There is no work of human hands which time does not wear away and reduce to dust.

Time’s ruins build eternity’s mansions.

Nothing puzzles me more than time and space, and yet nothing puzzles me less, for I never think about them.

If both what is before and what is after are in this same “now,” things which happened ten thousand years ago would be simultaneous with what has happened today, and nothing would be before or after anything else.

A watch is always too fast or too slow. I cannot be dictated to by a watch.

Our allotted time is the passing of a shadow.