If you think your belief is based upon reason, you will support it by argument rather than by persecution, and will abandon it if the argument goes against you. But if your belief is based upon faith, you will realize that argument is useless, and will therefore resort to force either in the form of persecution or by stunting or distorting the minds of the young in what is called 'education.'
Bertrand RussellAn atheist, like a Christian, holds that we can know whether or not there is a God. The Christian holds that we can know there is a God; the atheist, that we can know there is not. The Agnostic suspends judgment, saying that there are not sufficient grounds either for affirmation or for denial. At the same time, an Agnostic may hold that the existence of God, though not impossible, is very improbable; he may even hold it so improbable that it is not worth considering in practice. In that case, he is not far removed from atheism.
Bertrand RussellWhat is best in mathematics deserves not merely to be learnt as a task, but to assimilated as a part of daily thought, and brought again and again before the mind with ever-renewed encouragement.
Bertrand Russell