"If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties."

"If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties."

"If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties."

"If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties."

"If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties."

"Crafty men condemn studies; Simple men admire them; And wise men use them: For they teach not their own use: but that is a wisdom without them, and above them, won by observation."

"Philosophy when superficially studied, excites doubt, when thoroughly explored, it dispels it."

"A wise man will make more opportunities than he finds."

"Knowledge is power."