信而见疑，忠而被谤。
史记
Fear is the main source of superstition， and one of the main sources of cruelty. To conquer fear is the beginning of wisdom， in the pursuit of truth as in the endeavour after a worthy manner of life.
数学的美只向更有耐心的追随者展示。
人生是一幅大画布，你应该努力绘出绚丽多彩的画面。