Truth was always but the daughter of time.
The painter will produce pictures of little merit if he takes the works of others as his standard.
Time stays long enough for anyone who will use it.
Make yourself a master of perspective, then acquire perfect knowledge of the proportions of men and other animals.
Fix your course on a star and you'll navigate any storm.
When you put your hand in a flowing stream, you touch the last that has gone before and the first of what is still to come.