“ You have to be optimistic. I still have doubts and conflicts, but the bottom line is, I believe in the future. Frank Gehry Architect
“ Give me strength, not to be better than my enemies, but to defeat my greatest enemy, the doubts within myself. Give me strength for a straight back and clear eyes, so when life fades, as the setting sun, my spirit may come to you without shame. P. C. Cast Author
“ If a nonnegative quantity was so small that it is smaller than any given one, then it certainly could not be anything but zero. To those who ask what the infinitely small quantity in mathematics is, we answer that it is actually zero. Hence there are not so many mysteries hidden in this concept as they are usually believed to be. These supposed mysteries have rendered the calculus of the infinitely small quite suspect to many people. Those doubts that remain we shall thoroughly remove in the following pages, where we shall explain this calculus. Leonhard Euler Mathematician
“ I doubt I'll be singing forever, because at some point people aren't going to want to hear my music, and I hope that I'll still get the opportunity to write songs. Adele Singer-Songwriter
“ I have no doubt that if an actual ticking bomb situation were to arise, our law enforcement authorities would torture. The real debate is whether such torture should take place outside of our legal system or within it. The answer to this seems clear: If we are to have torture, it should be authorized by the law. Alan Dershowitz Lawyer