Opportunity is the great bawd.
Teach your child to hold his tongue; he'll learn fast enough to speak.
Who had deceived thee so often as thyself?
A lonely man on a rainy night who cannot read.
We are all born without knowledge, but curious. With curiosity we should be able to learn as much as possible. With curiosity, it has to take a lot of work to remain ignorant.
If you have something to do tomorrow, do it today.