The formulation of a problem is often more essential than its solution, which may be merely a matter of mathematical or experimental skill.

The significant problems we face today cannot be solved at the same level of thinking we were at when we created them.

When I can't handle events, I let them handle themselves.

When a contradiction is impossible to resolve except by a lie, then we know that it is really a door.

Every big problem was at one time a wee disturbance.

Successful people are simply people who learn to solve their problems... they are not people without problems.

No problem can withstand the assault of sustained thinking.

Most people spend more time and energy going around problems than in trying to solve them.

He that will not apply new remedies, must expect new evils: for Time is the greatest innovator: and if Time, of course, alter things to the worse, and wisdom and counsel shall not alter them to the better, what shall be the end?.

All problems are finally scientific problems.