心智通过练习而非被动吸收而成长。
The truth is, the science of Nature has been already too long made only a work of the brain and the fancy: It is now high time that it should return to the plainness and soundness of observations on material and obvious things.
Sustainability is not just about planting trees, but ensuring they thrive for generations to come.
实际发展水平与潜在发展水平之间的距离,前者由独立解决问题决定,后者由在成人指导下或与更有能力的同伴合作解决问题决定。
True leadership means making tough decisions for the right reasons.
I don’t like to be quiet. I like to be loud.