"I found... that my capacity for forgiveness and what may be called Christian love was not equal to the demands that I was making on it, and that persistence in a hopeless endeavour would do much harm to me, while not achieving the intended good to others. Anybody else could have told me this in advance, but I was blinded by theory... I had allowed myself more of a creed than scientific intelligence can justify. To follow scientific intelligence wherever it may lead me had always seemed to me the most imperative of moral precepts for me, and I have followed this precept even when it has involved a loss of what I myself had taken for deep spiritual insight."