……Now then, wherever you see the electromagnetic forces working it is worked through Hanumana’s blessings. He’s the one who creates electro-magnetic forces. So now, we can see that as Ganesha has got the magnetic force in Him, He’s the magnet, He has got the magnetic force, then we can say the electro-magnetic is the one which we call as Hanumana’s force, on the material side of it.
But from the matter He goes up to the brain. So, He rises from Swadhishthana up to the brain so, in the brain also He creates the co-relationships of the different sides of our brain. So how much He gives us, I mean, we can say if Ganesha gives us the wisdom, then He gives us the power to think. He protects us also that we should not think of bad things. That is we can say that, that if Ganesha gives us the wisdom, then Shri Hanumana gives us the conscience. I hope you understand the difference between the two. Wisdom is where you do not need conscience so much because you are wise: you know what is good, what is bad. But conscience is needed in a personality where he is to be controlled and that control comes from Shri Hanumana which is the conscience in the human being.
Now, this conscience, which is Shri Hanumana, is the subtle form of Him, which gives us – is in Sanskrit called as satasatvivekabusshi, means, sat means truth, asat means untruth and viveka means the discrimination and buddhi means the intelligence. So, intelligence to discriminate between the truth and untruth is given to us by Shri Hanumana.
( Source: An Extract of Talk of H H Shri Mataji Nirmala Devi on Shri Hanumana Puja, Frankfurt ,Germany , 31st August 1990)