Having weighted it we know is importance.
Having considered it we know is drawback.
Nothing but experiment can distinguish mistakes.
Science is a commander while practice is a soldier.
Find out how to learn to learn well, Find out how to go to go farther.
Seeing is better than hearing and in vesting is better than seeing.
To do is better than to say.
Experiment is the father of science.
Anyone has admitted an experiment is the father of science.
All of the reasons must come from observation and experiments.
Seeing is better than listening while practice is the best.
One shouldn’t believe everything he close oneself rather than truths from books.
Explore truths ,seek knowledge and you'll understand reasons.
Lookers-one will not experience happiness of observers.
Nothing is better than experiments.
Attempt is more effective than empty words.
Feeling is not always right but judging sometimes.
Explore bravely and do experiments repeatedly.
Careful observation seriously analysis and scientific summary.
Without practice everything proves to be failure