In the deepest heart of all of us there is a corner in which the ultimate mystery of things works sadly.
William JamesIn order to disprove the assertion that all crows are black, one white crow is sufficient.
William JamesThe sovereign voluntary path to cheerfulness, if our spontaneous cheerfulness be lost, is to sit up cheerfully, to look round cheerfully, and to act and speak as if cheerfulness were already there. If such conduct does not make you soon feel cheerful, nothing else on that occasion can.
William James