“We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%. A good programmer will not be lulled into complacency by such reasoning, he will be wise to look carefully at the critical code; but only after that code has been identified.” (Donald Knuth)

“The First Rule of Program Optimization: Don’t do it. The Second Rule of Program Optimization (for experts only!): Don’t do it yet.” (Michael A.Jackson)

“In theory there is no difference between theory and practice.
In practice there is.”(Yogi Berra)

“There are three rules for writing a novel. Unfortunately, no one knows what they are. ” (W. Somerset Maugham)

“Experience is what you get when you don’t get what you want. ” (Dan Stanford)

“A journey of a thousand miles begins with a single step “(Laozi)

“I would have written you a shorter letter, but I did not have the time. “(Blaise Pascal)