“Now we are advanced in science; why we shall talk about God?" This is the tendency. But how you can solve all these questions without accepting God? Without accepting a supreme source of everything, how you can solve? It is not possible. You cannot even produce a brain. You are eulogizing a great scientist like Professor Einstein. All right. Why not Professor Einstein creating a brain like him? What is the difficulty? He may create a brain like him and keep it in the glass case so that there will be no shortage of scientific men. But why he dies? Who is forcing him to death? Why he becomes diseased? Why he becomes old man? Who is controlling?
So it is very unfortunate that the Supreme Personality of Godhead, accepted by all the acharyas, not only at the present age, previously also… Vyasadeva, Narada, Asita, Devala, they are all great acharyas. And in the recent years, Shankaracharya, he also admitted. Ramanujacharya, Madhvacharya, Vishnu Svami, Lord Chaitanya – all these authorities, they are accepting Krishna as the Supreme Personality of Godhead. Then how is that – a less intelligent class of men, they are commenting differently?
The intelligent class of men, therefore, must admit the Lord as the ultimate source of all energies and thus pay tribute to the Lord for His good blessings. Simply by accepting the Lord as the supreme proprietor of everything, since He is actually so, one can achieve the highest perfection of life.
If a person tries to reciprocate a feeling of love towards the Supreme Personality of Godhead and is satisfied with the blessings of the Lord, he will at once feel the highest peace of mind for which he is hankering life after life. Peace of mind, or in other words the healthy state of mind, can be achieved only when the mind is situated in the transcendental loving service of the Lord.
(Excerpts from the teachings of Srila Prabhupada)