In a statement clause, the subject:
 Comes at or near the beginning of the clause.
 Comes before the verb.
 Agree with the verb in number and person.
 Often denotes the doer of an action.
It also often gives a clear idea of what the sentence is about.
 A noun:
Yoga is religious.
 A verbal noun:
Dancing is a wonderful way of keeping in training.
 An infinitive:
To err is human.
 A pronoun:
They argued ferociously about Ireland.
 A noun phrase:
The core of the problem is simple.
 A noun clause:
What he said was true.
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