Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.

长时间坐着同一个地方，砖头都会被踩穿，比喻持之以恒的努力！这坚持不懈的精神，太励志了！并且只有持之以恒的努力，才能成就非凡的事业！