As long as you are conscious of yourself, you can never concentrate on anything.

All great work artistic, poetic, intellectual or spiritual is produced at those moments when creators forget themselves altogether and are free from self-consciousness.

According to the Buddha's teaching the beginning of the life-stream of living beings is unthinkable. THe believer in the creation of life by God may be astonished at this reply. But if you were to ask him 'What is the beginning of God?' he would answer without hesitation 'God has no beginning', and he is not astonished at his own reply.

First of all, Buddhism is neither pessimistic nor optimistic. If anything at all, it is realistic, for it takes a realistic view of life and the world. It looks at things objectively (yath?bh?tam). It does not falsely lull you into living in a fool's paradise, nor does it frighten and agonize you with all kinds of imaginary fears and sins. It tells you exactly and objectively what you are and what the world around you is, and shows you the way to perfect freedom, peace, tranquility and happiness.

There is no unmoving mover behind the movement. It is only movement. It is not correct to say that life is moving, but life is movement itself. Life and movement are not two different things. In other words, there is no thinker behind the thought. Thought itself is the thinker. If you remove the thought, there is no thinker to be found.

As long as you are conscious of yourself, you can never concentrate on anything.

If by the expression "not practical" you mean "not easy," you are right. Definitely it is not easy. Yet it should be tried. You may say it is risky trying it. Surely it cannot be more risky than trying a nuclear war.